Heating-boiler



(no Model.)

B. A. WOOD. HEATING BOILER.

No. 571,208. Patented NOV; 10,1896.

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UNITE STATES PATENT OFFICE.

EDYVH. A. WOOD, OF UTICA, NEW. YORK.

HEATING-BOILER.

SPECIFICATION forming part of Letters Patent No. 571,208, dated November 10, 1896. Application filed A gust 4, 1896. Serial No. l,653. (No model.)

' zen of the United States, residing at Utica, in

the county of Oneida andState of New York, have invented certain new and useful Improvements in Heating-Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in boilers or hot-water heaters; and the invention consists in a novel construction of casing whereby outer radiation is prevented and the products confined to the heating of the water in the boiler.

The invention also consists in the'combination of a steam-boiler, water-heater, or other fuel-burning device provided with a central fire-box surrounded by a water chamber or boiler and an outer casing or jacket to form a space between the walls of said chamber and jacket, with said space or chamber comform a space to receive a non-conducting material, and to certain novel features in the construction and arrangement of parts, as hereinafter described. So far as this outer casing is concerned, it may be applied to other forms of boilers, vertical or horizontal, and with or without iflues or tubes.

In the accompanying drawings, Figure 1 is a perspective View of a boiler or heater, showing my improvements. Fig. 2 is a horizontal section of the same, showing one form of staves to compose the outer casing with some of the spaces between the webs filled with the non-conducting material. Fig. 3 shows a modification in the manner of constructing the staves.

A represents a fire-boxprovided with a draft-supply door B, controlled by the ordinary form of automatic draft-regulator C,

which also controls the damper of the smokepipe D. The crown-sheet of the fire-box is preferably made dome-shaped, or if not domeshaped it should incline from the horizontal, which provides for a good circulation for either steam or hot water, according as the boiler is used for either purpose, and reduces to a minimum the danger of explosion or damage to the boiler by a sudden bearing of the crown-sheet from lowwater or to provide against a sudden submerging of the same by turning water in when the Water in the boiler is low and the fire burning.- The boiler-shell and water-chamber E surrounds the fire-box and extends above the dome thereof, and is provided with the usual form of gage E and supply. and feed pipes.

The outside covering F for the boiler is composed of a series of T-shaped staves f, with the stem f of the T tapering to a fine edge and forming a space between the adjacent faces for a filling of asbestos or other non-conducting material. The staves stand vertically'around the boiler-shell and sufficiently distant therefrom to form a flue-space F between the boiler-shell and the inner faces of said staves, except at their upper ends,

where they curve inward until they strike the boiler, cutting off the flue-space at this point. The boiler-shell extends a short distance above this point to allow steam and water space above the crown-sheet of fire-box. A suitable band around their upper ends serves to hold the T-shaped staves in place.

In Fig. 3 is shown a modification in the manner of constructing the staves wherein instead of forming the stem solid it is shown composed of a series of pins, the object being to present as smallaniount of radiating-sur-v face as possible and to provide means for holding the asbestos or other non-conductiu g material on the face of the casing. l

A fire or feed opening G extends throug the outer wall or casing and is provided with a door G, having air-supply opening G and a feed-opening G extending through the boiler-shelland into the fire-box, and which opening is slightly larger than the feed-opening G to form smoke or draft passages G from the fire-box to the flue-space E, the

opening G admitting the requisite amount of air to mingle with the gases to insure proper combustion, causing the mingled air and gas to pass to the flue-space surrounding the boiler as a blaze instead of non-consumed gas.

The smoke-pipe His shown in the drawings as being located near the base of the boiler; but it will be readily apparent that it may be placed at any desired point, as its location in no manner affects the operation.

By the construction of boilers as above described I am enabled to dispense with all tubes or flues, thus materially reducing the cost of a boiler and also to cause a much more perfect combustion of fuel and the consequent reduction in running expenses.

By forming the outer shell or casing of a series of staves in substantially the form described, with the stem of the T running to a fine edge, means are provided for the proper holding of a non-conducting material on the surface of the shell, which acts to prevent outward radiation, and consequently confines the products of combustion to the heat-ing of the water in the boiler.

While the staves composing the outer shell have been shown and described as made in substantially T shape in horizontal cross-section, still it will be readily seen that the shape thereof may be changed without departing from the spirit or intent of my invention, so long as a base to form the inner wall of the casing is provided and the outwardly-extending ribs or pins are arranged to receive a nonconducting material between the adjacent side walls and that the casing can be applied to any form of boilers.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination in a steam-boiler, water-heater, or like device, a fire-box surrounded by a continuous water-chamber, an opening in said chamber a casing surrounding the chamber and forming a space or flue between the outer wall of the chamber and casing, a feed-door fitting the casing and made narrower than the opening in the water-chamber to form communicating passage -ways between fire-boX and space or flue at each side of the door only substantially as described, whereby the entire products of combustion are caused to pass out through said passageways as set forth.

2. The combination in a steam-boiler, water-heater, or like device, a fire-box surrounded byawater-chamber, a casing surrounding the chamber forming a flue between the outer wall of the casing and chamber, an opening in the casing communicating with the flue at each side of said opening and forming the only outlet from the fire-box thereto, and a door in the casing provided with air-openings substantially as described,whereby air is mingled with the gases in passing to the fine, as and for the purpose set forth.

3. The combination in a steam-boiler, water-heater or like device, a fire-box, a waterspace surrounding the same and extending above the crown sheet thereof, with said crown-sheet having its upper surface made dome-shaped or inclining from the horizontal, for the purpose and substantiallyas described.

4. The combination in a steam-boiler, water-heater or like device, an outer casing composed of a series of vertically-arranged staves having a portion to form the inner wall of said casing and the outwardly-extending ribs or pins to form a space to receive a non-conducting material substantially as and for the purpose set forth. v

5. The combination in a steam-boiler, water-heater or like device, an outer casing composed of a series of vertically-arranged staves made in substantially T form in cross-section,

and a non-conducting material filling the space between the adjacent side walls of the stems substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EDWIN A. WOOD. lVitnesses:

W. E. Wool), E. B. DONN. 

